Scientists thought that the reason children in early studies developed leukemia was because of the viral vectors and oncogenes they contained. These oncogenes stimulated cells to reproduce therapeutic DNA. How did this cause leukemia?

What role do bacteria play in the carbon cycle

In a relatively small iguana population the allelic frequency is tracked for three generations. webbing is a recessive allele; no webbing is the dominant allele. during one very rainy spring and summer, a flood washes all the iguana without webbed feet out to sea. by the fall, and three generations later, you have the gene pool seen here.

A60-tooth gear is connected to a 72-tooth gear.if the smaller gear turns 12 times,how many turns does the larger gear make?